MagicaVoxel - A free lightweight GPU-based voxel art editor and interactive path tracing renderer.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
World Machine - Command powerful tools like erosion and advanced colormaps to create terrain heightmaps, meshes, and textures for your game or 3D scene. Download for Free!
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Terragen - Terragen is a scenery generator, created with the goal of generating photorealistic landscape...
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